WebWasher Classic 2.2.1 and 3.3, when running in server mode, does not properly drop CONNECT requests to the localhost from external systems, which could allow remote attackers to bypass intended access restrictions.
https://exchange.xforce.ibmcloud.com/vulnerabilities/19144
http://www.securityfocus.com/bid/12394
http://securitytracker.com/id?1013036